Feedstocks based on corn and sugarcane are of the greatest interest
for ethanol production. Sindhu et al. [31] reported that
0.685 g/g of reducing sugar was produced per gram of pretreated
biomass using sugarcane tops as feedstock for the production of
bioethanol. The two-step enzymatic hydrolysis of corn meal by
commercially available a-amylase and glucoamylase and the subsequent
or simultaneous ethanol fermentation of the hydrolysates
by S. cerevisiae were studied by Mojovic et al. [32]. According to
their results, the maximum value of product yield on substrate (YP/
S) was 0.50 g/g. Another study conducted by Gutierrez-Rivera [33]
aimed increasing ethanol production and the complete utilization
of hydrolysate sugars using sugarcane bagasse hydrolysate supplemented
with sugarcane molasses in a mixed yeast culture (S.
cerevisiae ITV-01 and Scheffersomyces (formerly Pichia) stipitis NRRL
Y-7124), achieved 0.45 g/g ethanol yield. In these two studies,
yields on substrate were lower than the maximum bioethanol yield
(0.945 g/g) obtained in the current study.